I think that leatherworking is worst profession in world of warcraft cataclysm (i'm lw). because the other profession have a lot of cooler things that make their better than lw.
For exaple:
jewelcrafting : Is the profession with you make much gold than others and you have overpower soket.
Blacksmitinhg: you can sell belt buckle and you have a lot of buckle fot your gear, and you do more golds than lw
Mining: you need it for levelling jc, bs or eng and you can sell the ragents for other profession at very good price.
Engineering: you have a lot of funny things that you can sell and a very cool mount
Tailoring: you have a good mount and you can combined with Enchanting you can do a lot of golf and you have enchants on yout ring with enchanting.
Enchanting: see tailoring.
Alchemy: maybe will be the best profession in catclysm, you have an epic flying mount, you sell your flask at a very good price and in raid you only need 1flask because your flask are up for 2h.
Herbalism: you need it for alchemy, and if you do it a lot of gold if you sell herbs.
Inscription: with medium glyphs and triple spec you will do much gold than wotlk and you have other interesting things.
and lw (and skinning) what have? no mount, no funny item, don't make gold (yes 10g per craft mm....a lot) and no very good bonus.
I'm not whining is only what i think, so /discuss